PSIM9.0仿真,主電路為Buck電路,輸入電壓5V,輸出3.3V,控制電路為電壓滯環控制,模擬滯環部分采用軟件自身電路。
上傳時間: 2021-12-05
上傳用戶:
This Section covers the design of power transformers used in buck-derived topologies: forward converter, bridge, half-bridge, and full-wave centertap. Flyback transformers (actually coupled inductors) are covered in a later Section. For more specialized applications, the principles discussed herein will generally apply.
上傳時間: 2021-12-16
上傳用戶:fliang
本論文采用基礎的元器件、集成電路來實現
上傳時間: 2022-01-29
上傳用戶:
The PW5300 is a current mode boost DC-DC converter. Its PWM circuitry with built-in 0.2? powerMOSFET make this regulator highly power efficient. The internal compensation network alsominimizes as much as 6 external component counts. The non-inverting input of error amplifierconnects to a 0.6V precision reference voltage and internal soft-start function can reduce the inrushcurrent. The PW5300 is available in the SOT23-6L package and provides space-saving PCB for theapplication fields
標簽: pw5300
上傳時間: 2022-02-11
上傳用戶:jiabin
PW4203 is a 4.5-22V input, 2A multi-cell synchronous Buck Li-Ion battery charger, suitable forportable application. Select pin is convenient for multi-cell charging. 800 kHz synchronous buckregulator integrates of 22V rating FETs with ultra low on- resistance to achieve high efficiency andsimple circuit design.The PW4203 is available in an 8-pin SOP package, provides a very compact system solution andgood thermal conductance
標簽: pw4203
上傳時間: 2022-02-11
上傳用戶:
The PW2053 is a high-efficiency monolithic synchronous buck regulator using a constantfrequency, current mode architecture. The device is available in an adjustable version. Supply currentwith no load is 40uA and drops to <1uA in shutdown. The 2.5V to 5.5V input voltage range makesthe PW2053 ideally suited for single Li-Ion battery powered applications. 100% duty cycle provideslow dropout operation, extending battery life in portable systems. PWM/PFM mode operationprovides very low output ripple voltage for noise sensitive applications. Switching frequency isinternally set at 1.2MHz, allowing the use of small surface mount inductors and capacitors. Lowoutput voltages are easily supported with the 0.6V feedback reference voltage
標簽: pw2053
上傳時間: 2022-02-14
上傳用戶:jason_vip1
能源短缺和環境惡化是人類共同面臨的挑戰。開發新型清潔能源是解決能源短缺和環境惡化的捷徑,但是太陽能能源不連續和不穩定的缺點影響其單獨使用的效果。為了解決這個問題,可以選擇使用多種性質互補的能源聯合供電,相互彌補彼此的不足,以達到連續穩定的電能輸出。基于雙輸入直流變換器(Multipk-Input Converter,MC)的光電互補系統相對于風光互補系統而言,在太陽能功率充足時,可以選擇將多余的能量進行并網,省去了蕃電池等儲能設備,也可大大節約成本,簡化控制:而且電網是全天候的,比純新能源聯合系統更加可靠。因此本文將對光電互補系統,研究其拓撲、能量管理和系統參數設計等等在隔離應用的中小功率場合,推挽變換器控制方便,結構簡單,應用廣泛傳統的多輸入推挽變換器結構復雜,成本高。通過分析MIC的生成方法,利用脈沖電壓源 Pulsating Voltage Source Ce,PⅤSC或者脈沖電流源(Pulsating Curren Source Cell,PCSC)中聯或者并聯構成簡單實用的一族多輸入推挽變換器,詳細分析了BUCK型PVSC串聯構成的雙輸入推挽變換器的小信號模型和控制方式,為了能夠提供交流輸出,本文還詳細分析了半橋逆變電路的控制方式,并推導出其數學控制模型通過分析系統的工作模式、能量管理策略和不同控制方式對系統的影響,闡叨基于雙輸入推挽變換器的光電互補系統的工作原理。并對系統軟件涉及到的太陽能最大功率跟蹤、光電互補控制和逆變控制等算法進行重點研究功率電路參數設計合理與否,直接影響著系統的性能和指標,其中推挽變壓器和濾波器的參數設計尤為重要,為此專門給出了硬件參數設計步驟;然后,根據軟件算法,設計了控制軟件流程圖來更清晰的表達軟件控制的思想軟件參數是影響系統魯棒性和快速性的另一個關鍵因素,在硬件設計的基礎上,對軟件參數進行優化設計,并利用 Simulink軟件對設計參數進行仿真分析和修正。然后采用TMS320F2809作為控制芯片,搭建了實驗原理樣機,并進行了相關驗證實驗
標簽: 推挽變換器
上傳時間: 2022-03-16
上傳用戶:
以AT89S52單片機為控制核心,采用電容降壓技術,Buck電路拓撲,PWM驅動模塊和功率器件散熱設計,通過高速的數據采集、主功率輸入輸出模塊和控制模塊,設計一種新型智能車載充電器.在充電過程中,通過負脈沖瞬間放電實現對鉛酸蓄電池的再生修復,提高電池的有效容量,延長使用壽命.該充電器體積小、速度快、效率高、可靠性好.With AT89S52 single chip computer as the control core,a new type of intelligent car-carried charger was designed by using capacitance step-down technology,Buck circuit topology,PWM driving module and power device heat dissipation design,through high-speed data acquisition,main power input and output module and control module.In the charging process,the regeneration and repair of lead-acid batteries are realized by instantaneous discharge of negative pulse,which improves the effective capacity of batteries and prolongs their service life.The charger has the advantages of small size,fast speed,high efficiency and good reliability.
標簽: 車載充電器
上傳時間: 2022-03-27
上傳用戶:
本設計使用已有的單片機器件,數字、模擬電子電路設計技術,設計一款基于STM32F103C8T6單片機的數控可調開關電源(王兆安,劉進軍,電力電子技術第五版:北京機械工業出版社,2009)。輸入的市電經一系列電路得到12V,5V和3.3V直流電壓,這些電壓分別給需要的電路供電。通過單片機輸出PWM波,經BUCK電路輸出電壓電流數據,經ADC反饋采樣電路反饋給單片機。按鍵控制調節電壓電流大小,在液晶屏上實時顯示。
上傳時間: 2022-04-03
上傳用戶:zhaiyawei
為設計高效率、低損耗的PFC電路,本文基于UCC28019進行電路設計。以UCC28019輸出的PWM波形來控制Boost升壓斬波為核心電路,使電路中的電容交替地充放電、電感交替的儲存和釋放能量,最后實現在輸入AC20V~24V電壓情況下穩定輸出DC38V。測試結果表明,系統實現效率為95%左右,電壓調整率小于1%,電源功率因數0.99。交流輸入電壓為19.0-25.8 V時,輸出直流電壓穩定性較好,電感無明顯嘯叫且紋波小,具有一定的帶負載能力和實用性。In order to design the PFC circuit with high efficiency and low loss,this paper designs the circuit based on UCC28019.The PWM waveform output by UCC28019 is used to control boost chopper as the core circuit,which alternately charges and discharges capacitors,stores and releases energy by inductors,and finally achieves stable output of DC38 V under the input voltage of AC20 V~24 V.The test results show that the system achieves about 95% efficiency,the voltage adjustment rate is less than 1%,the power factor is 0.99,and the AC input voltage is 19.0-25.8 V.The output DC voltage stability is good,the inductance has no obvious whistle and the ripple is small,so it has certain load capacity and practicability.
上傳時間: 2022-04-03
上傳用戶: